I did pick an area where customers don't want to adopt new tech. Software for farmers anyone? And it was not just my error in picking this exact field, there are struggling competitors with millions and millions of VC money and YC stripes and no winners in sight.

Not all niches, no matter how big, are created equal. I would try to either find something with raising tide or place where potential customers are actively searching and buying what you have to offer and will profit from it.